The energy of lithium battery made of silicon-carbon anode material far exceeds that of Tesla Model 3 battery.

Amprius of California announced that it has produced the first batch of ultra-high energy density lithium batteries, which have a battery density of 450Wh/kg (1150 Wh/l), making it the highest energy density lithium battery available at present. By weight, Amprius lithium batteries have 73 per cent more energy and 37 per cent less volume than Tesla Model 3 batteries. Amprius says the battery can achieve such a high energy density mainly because it uses silicon nanowire technology.

The theoretical specific capacity of silicon material is much higher than (about 10 times) graphite, which is close to the performance limit, and the voltage to lithium is not high, so it is expected to be the best anode material for high energy density lithium battery. According to the budget of Gao Gong Lithium, the demand for silicon-based anode materials will be 22000 tons in 2022, the CAGR will reach 80% in 2019-22, and the average gross profit margin of the industry is more than 40%. Mechanism analysis shows that silicon has low electrochemical lithium intercalation potential, no lithium precipitation problem and abundant reserves, and the silicon-based negative electrode is the first choice for high energy density lithium-ion batteries.

According to the theme database of the Financial Associated Press, among the relevant listed companies:

Bertre Bertre, a subsidiary of Baoan, China, cooperates with Huawei to develop projects related to silicon-based anode materials and apply for patent protection for related technology. the company's silicon-based anode materials are sold to customers at home and abroad.

Shi Dashenghua silicon-based negative material products are ordinary SiOx-C negative electrode and high first-efficiency SiOx-C negative electrode. At present, customers who send samples for testing include major domestic lithium battery manufacturers.